Iron



FIG. 1 is a perspective view of an iron showing our new design;

FIG. 2 is a rear view thereof; and,

FIG. 3 is a top plan view thereof.

The uneven length broken line at the top of the shaded region is an unclaimed boundary and forms no part of the claimed design. The broken line showing of the remainder of the iron is for environmental purposes only and forms no part of the claimed design. 

The ornamental design for an iron, as shown and described. 